[R] how to replace the second "-"

Gabor Grothendieck
Fri, 20 Oct 2006 03:38:06 -0000

Try this:

sub("(-[^-]*)-", "\\10", c("1-1-1",
"1-1-2", "1-2-1"))


On 10/19/06, ronggui <ronggui.huang at gmail.com>
wrote:
> I have a string vector like these:
> [1] "1-1-1" "1-1-2" "1-2-1"
>
> And I wanna replace the second "-" with "0", that is, I
wanna get the result
> like: [1] "1-101" "1-102" "1-201".
>
> How should I write the Regular Expressions? Thanks!
>
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